When a giant sinkhole opened up at Top of the Rock Golf Course in Missouri, six months after it opened, Johnny Morris, the billionaire owner, was understandably concerned. That is, until he discovered what had been hiding underneath the collapsed putting green the entire time – an expansive underground rock formation. Morris decided to start digging; 30,000 truckloads later, his discovery is on its way to becoming a must see natural attraction that has to be seen to be believed.